| prechordal | <anatomy> Situated in front of the notochord; applied especially to parts of the cartilaginous rudiments in the base of the skull. Origin: Pref. Pro + chordal. Source: Websters Dictionary (01 Mar 1998) |
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| prechordal plate | A small area immediately rostral to the cephalic tip of the notochord where ectoderm and endoderm are in contact; when turned under the growing head, it forms the pharyngeal membrane. See: oral plate. Synonym: prechordal plate. (05 Mar 2000) |
| prechordal |
situated cranial to the notochord; called also prochordal.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| prechordal p. |
thickened endoderm, cephalad of the notochord, that combines with ectoderm to become the oropharyngeal membrane.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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